Following is a transcript of the video. Narrator: Here's how four soap factories create their products. Dr. Bronner's Magic Soaps has been around since 1948 and is most famous for its pure castile ...

Add Yahoo as a preferred source to see more of our stories on Google. Soap-making has a rich history and is a blend of art and science. While traditional soap recipes call for ingredients like oils ...

When you buy through our links, Business Insider may earn an affiliate commission. Learn more Walk into any beauty store with artisan soap and you may wonder what it would be like to craft your own.